Patent SG-11201901604Q-A (SG)
Title: A liquid antioxidant composition for raw rubbers
Inventor: ZHOU YI QIONG
IPC: C08L91/00
Filed: 2017-08-21
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 08 March 2018 (08.03.2018) WIPO I PCT omit VIII °nolo omioomillowo oimIE (10) International Publication Number WO 2018/041649 Al (51) International Patent Classification: C08L 91/00 (2006.01) C08K 5/00 (2006.01) C08K 5/134 (2006.01) CO8L 7/00 (2006.01) C08J 3/20 (2006.01) CO8L 21/00 (2006.01) CO8F 6/00 (2006.01) (21) International Application Number: PCT/EP2017/070996 (22) International Filing Date: 21 August 2017 (21.08.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: PCT/CN2016/097315 30 August 2016 (30.08.2016) CN (71) Applicant: BASF SE [DE/DE]; Carl-Bosch-Str. 38, 67056 Ludwigshafen am Rhein (DE). (72) Inventors: ZHOU, Yi Qiong; Xiang Yin Road 500 Nong, No. 38, Room 1002, Shanghai, 200433 (CN). FAN, Chang Liang; Laoshan Road 1, Wei Hai City, 264200 (CN). YUAN, Guo Liang; Nan Qi Chang Road 458 Nong, Shang- hai, 201600 (CN). ZHOU, Zhong Yi; Luoxiu New Village, Shanghai, 200231 (CN). (74) Agent: BASF IP ASSOCIATION; BASF SE, G-FLP - C6, 67056 Ludwigshafen (DE). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: with international search report (Art. 21(3)) (54) Title: A LIQUID ANTIOXIDANT COMPOSITION FOR RAW RUBBERS (57) : The present invention provides a liquid antioxidant composition used for raw rubbers comprising 5% to 30% by weight of at least one aromatic amine-based antioxidant agent, 20% to 70% by weight of at least one hindered phenol-based antioxidant agent, 0% to 40% by weight of at least one phosphite-based antioxidant agent; and 20% to 40% by weight of at least one solvent having boiling point higher than 185°C and freezing point lower than -10°C under 101.325KPa, the weight percentage of component a), b), c) or d) is based on the total weight of antioxidant composition, wherein the mixture of component a), b) and c) is liquid at 25°C under 101.325KPa. The present invention also provides a liquid antioxidant composition comprising 5% to 20% by weight of solid aromatic amine-based antioxidant agent, 20% to 50% by weight of solid hindered phenol-based antioxidant agent, 0% to 30% by weight of solid phosphite-based antioxidant agent and 30% to 40% by weight of solvent having boiling point higher than 185°C and freezing point lower than -10°C under 101.325KPa. The weight percentage is based on the total weight of antioxidant composition. The present invention further provides an application of said liquid antioxidant composition in raw rubbers such as natural rubber and raw rubbers synthesized via solution polymerization.